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Country:
United States of America (USA)
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Brand:
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Common type USA tube/semicond.
Genalex, BGE (brand), British General Electric Co. Pty Ltd.; Sydney, NSW.
Osram (tubes/valves) - see British General Electrics; Sydney
Adzam (tubes made by MBLE, Belgium)
Canadian Marconi Co. Ltd. (CMC, Esterline), Marconi's Wireless; Montreal, QC
Purotron, Raga AG; Zürich
Visseaux / Télévisso; Lyon / Paris
Don Shinkukan Seisakusho - Don Vacuum Valve Mfg.; Tokyo
Elevam エレバム, Miyata Seisakujo; Tokyo
Arcturus Radio Tube Co.; Newark, NJ
Eveready (Ever Ready), AENMC / National Carbon Company (NCC); Columbia
Fada Radio & Electric Co.; Long Island (NY)
JRC, Johnsonburg Radio Corporation; Johnsonburg, PA
Lafayette Radio & TV Corp; New York (NY)
Raytheon Mfg. Co.; Cambridge, MA
RCA (RCA Victor Co. Inc.); New York (NY)
Sonatron Tube Company; Chicago and New York
Sparton-Cardon Tubes; Jackson MI
Sylvania (Hygrade, GTE, Nilco); Emporium (PA)
Triad Television & Mfg. Co.; Pawtucket, RI
Van Dyke Laboratories; Newark, NJ
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| Tube type: |
Triode, vacuum Universal |
|
| Identical to |
56
= A256
= G-56
= ER56
= VT-56
= PH56
= 256
= PH256
= NU-56
= T56
= C-56
|
| Similar
Tubes |
Other shape (e.g. bulb type):
56S
; G-56-S
Normally replaceable-slightly different:
38056
; Z56
Other class quality (otherwise equal):
CV611
; NU-56S
Heater different:
76
Other base:
56_Coronet
Other base and other heater:
6P5G
|
| First year |
1932
First models by RCA with this tube in 1932.
|
| First Source
(s) |
1932 : The AWA Journal Vol. 7, 1992.
Jun.1932 : -- Collector info (Sammler)
|
| Predecessor Tubes |
27
|
|
Successor Tubes
|
76
6P5G
56A
|
| Base |
UY-Base, 5 Pins (USA, April 1927) (Codex=H)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2.5 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC |
Dimensions (WHD)
incl. pins / tip |
x 103 x 38 mm / x 4.06 x 1.50 inch |
| Weight |
34 g / 1.20 oz |
| Tube prices |
2 Tube prices (visible for members
only)
|
| Information source |
Essential Characteristics, GE 1973
Taschenbuch zum Röhren-Codex 1948/49
|
56: Courtesy Bureau Belper (De Muiderkring, Bussum)
Anonymous 10 Collector
|
56: TFK Werkstattbuch
Wolfgang Holtmann
More ...
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Just Qvigstad
|
56: Sylvania Technical Manual
Peter Hoddow
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1574
Collection of
Collection of a member from USA Collection of a member from FIN Collection of a member from D Collection of a member from D |
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Variants
Arcturus version w/ blue bulb
|
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56 with dome bulb
|
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The 56 type tube used to be made in a distinctive violet glass by early FIVRE production. Although color is violet, these tubes are commonly referred and known as "red Fivre tubes".
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